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  1. Stock udps sn95 5.0

    5.0L Tech
    Hi all, This is likely a shot in the dark, but does ANYONE on here have the STOCK water pump, crankshaft AND alternator pulleys? My aftermarket ones are causing major drivability issues, to the point where the car is off the road and I will likely sell her if I can't get the factory pulleys...
  2. Problems with tune after install mods (CAI, TB, Plenum, etc)

    4.6L Tech
    Hi everyone, I have a problem with my mustang and i wanted to know your opinion about the correct parameters for some sections at Diablosport U7146. I own a Mustang GT 2001 (manual) with the following mods: CAI (SR Performance), Underdrive Pulleys (SR Preformance), TB/Plenum Combo...
  3. New guy looking for MODS

    4.6L Talk
    I have a 2002 Mustang GT with 3.73, short throw, CAI, Superchips Tuner tuned for 91 octane (better mpg and some hp), Flowmaster 40s, and a stage 2 clutch. I was wondering what other mods I can add to my car (nothing crazy like superchargers). I was thinking under drive pulleys but I have heard...
  4. 1989 Mustang 2.3L EFI, Ranger header or new pulleys?

    2.3L Tech
    I've had this car (it's my first) for a couple months now and within the last couple of weeks I've removed the air silencer, built myself a decent CAI with a K&N filter, and blocked the EGR all according to information on these forums. It does run noticeably quicker, in my opinion, and this is...
  5. 99 gt underdrive pulleys

    V6 Talk
    would they fit on a 99 v6, all i can find is pulleys for the 99 gts, and i found one pulley for the 99 v6 however its only the crankshaft pulley, not the crankshaft, water pump, and alternator pulley, if i bought the pulley package for the 99 gt would it fit on my 99 v6?
  6. 2002 Mustang GT Automatic- Steeda U/D Pulley install question

    4.6L Tech
    I searched the threads here and could not find the answer to my question. I ordered a set of Steeda U/D Pulleys for my 2002 Auto GT. I watched the video on and I read the directions. It should have been an easy install... or so I thought. I got the Alt. and H20 pulleys changed...
  7. 1996 Mustang Air Compressor Pulley

    V6 Talk
    Okay, so I have a problem with my car... It has 148k miles on it. I have a brand new transmission that maybe has 2k miles on it. The engine has had it repairs but now the air compressor pulley is NOT turning, thus burning the fan belt. I turn on the A/C and the engine literally almost stops...
  8. steeda pulleys and sct tuner

    4.6L Talk
    steeda pulleys any good for my 99 GT? and opiniones on sct tuner or diablo tuner
  9. pulleys and t-lok

    V6 Tech
    I've been trying to decide on my next mod so i was looking into a t-lok and/or pulley's. so i was wondering if anybody had any advice on which one to do or both. and if so if anybody knew a a good place or good ones to get it would be greatly appreciated?...also i was reading on here and some...
  10. steeda underdrive pulleys 2002 Mustang GT

    4.6L Tech
    i was getting the steeda UD pulleys but i read they slow down accesories by 25%. now i remember reading somewhere that they only recommend that it be 10-15%, but i dont remember if it was reffering to the crank or to the accesories. my car is a DD. anyone had problems with steeda UD pulleys? ive...